LOINC Code 21747-1: HC rearrangements Molgen Ql (Bld/Tiss)

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Immunoglobulin heavy chain gene rearrangements. It is commonly used with the system or sample type Bld/Tiss.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Both
• Method: Molgen

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• HC gene rearrangements [Presence] in Blood or Tissue by Molecular genetics method
• Immunoglobulin heavy chain gene rearrangements
• Arbitrary; B-cell Clonality; Blood; Chains; Chn; Clonality; Genetics; HC gene Rear; Heredity; Heritable; IgH; Immune globulin; Immuno; Immunoglob; Immunoglobin; Imunoglbon; Imunoglobn; Inherited; Leukemia; Lymphoma; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.REARRANGEMENTS; Ordinal; PCR; Point in time; QL; Qual; Qualitative; Random; Rearr; Rearrangement; Screen; Tissue; Tissue, unspecified; WB; Whole blood; Whole blood or Tissue

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions